Henry Percy, 3rd Earl of Northumberland was born 25 July 1421 to Henry Percy, 2nd Earl of Northumberland (c1392-1455) and Eleanor Neville (1398-1472) and died 29 March 1461 Battle of Towton of unspecified causes. He married Eleanor Poynings (c1422-1484) 25 June 1435 JL . William I of England (1027-1087), Henry II of England (1133-1189), Charlemagne (747-814), Hugh Capet (c940-996), Rollo of Normandy (860-932), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Ralph Percy (1440-)|
|Anne Percy (1444-1522)|
|Margaret Percy (1447-)||1447||William Gascoigne (c1450-1487)|
|Henry Percy, 4th Earl of Northumberland (c1449-1489)||1449||28 April 1489||Maud Herbert (c1448-c1485)|
|Elanor Percy (1455-)|
|Elizabeth Percy (1460-1512)||1460||1512||Henry Scrope, 6th Baron Scrope of Bolton (c1468-1506)|
|Mary Percy (c1461-)|